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- JavaScript
- Python
- C++
- Rust
- Ruby
- Dart
- Groovy
- Scala
- C#
- Haskell
- Nim (Beta)
- Crystal
- Clojure
- Factor (Beta)
- C
- Java
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- Julia (Beta)
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- PHP
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Start training on this collection. Each time you skip or complete a kata you will be taken to the next kata in the series. Once you cycle through the items in the collection you will revert back to your normal training routine.